| Idar-Oberstein to Cervello | 629.82 mi (1,013.60 km) |
| Idar-Oberstein to Cervera | 627.26 mi (1,009.48 km) |
| Idar-Oberstein to Ceuti | 908.93 mi (1,462.78 km) |
| Idar-Oberstein to Cheste | 807.99 mi (1,300.34 km) |
| Idar-Oberstein to Chiclana de la Frontera | 1,138.91 mi (1,832.90 km) |
| Idar-Oberstein to Chipiona | 1,128.94 mi (1,816.86 km) |
| Idar-Oberstein to Chiva | 809.34 mi (1,302.51 km) |
| Idar-Oberstein to Churriana de la Vega | 1,025.15 mi (1,649.82 km) |
| Idar-Oberstein to Ciempozuelos | 847.58 mi (1,364.04 km) |
| Idar-Oberstein to Cieza | 902.35 mi (1,452.19 km) |
| Idar-Oberstein to Cisterniga | 803.38 mi (1,292.91 km) |
| Idar-Oberstein to Ciudad de Melilla | 1,123.25 mi (1,807.69 km) |
| Idar-Oberstein to Ciudad Real | 923.76 mi (1,486.65 km) |
| Idar-Oberstein to Ciudad-Rodrigo | 920.41 mi (1,481.25 km) |
| Idar-Oberstein to Cocentaina | 848.32 mi (1,365.24 km) |
